Collect 5 black stones in one line (vertical, horizontal or diagonal). Do not
collect 5 white stones. A fun and relaxing 5 stones puzzle game. We promise you’ll
never lose a piece.

The game has been designed for one person. The playing board is a square comprising
49 - fields (7 x 7). There are 49 blocks standing numbered 1 through to 49. Every
block has two faces: face A and face B. On the B face all the blocks are underlined.
Only one side of the block is visible at any given time. On every side there are
24 white and 25 colored blocks ( 5 yellow, 5 blue, 5 pink, 5 red and 5 green).

Make 5 stones at one line. Build five black stones at one line. You need to build 5 stones on vertical, horizontal or diagonal line. Do not build five white stones. Unlike the case of five stones on the second line in the corner,
Even if the extra black stone is one line away, Black can still kill using the small. The best black can do is to make a small reduction in sente. ( can also be played at a, but that gives white an extra ko threat.)